Answer:
Tear one off and scratch my head, what once was red is black instead!
What goes up but never comes down?
Without this, H2O would just be 2O
You might accuse someone living with a stolen identity of being this.
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
I am a room that has a roof but no walls. What am I?